\begin{tabular}[b]{c|c}
\begin{tikzpicture} \draw[->,very thick] (0,.5) -- (.5,0); \end{tikzpicture} & \begin{tikzpicture} \draw[->,very thick] (0,0) -- (.5,.5); \end{tikzpicture}
\\\hline
\begin{tabular}[t]{ll}
\pbox{20cm}{70\% \\ $\mu$: -9\% \\ N: 15307}
&\scalebox{.25}{\input{hist/m0-s1-1.tex}}
\end{tabular}
&
\begin{tabular}[t]{ll}
\pbox{20cm}{30\% \\ $\mu$: 46\% \\ N: 6605}
&\scalebox{.25}{\input{hist/m0-s1-2.tex}}
\end{tabular}
\end{tabular}
